Pendant switch



D. HJORTH.

PENDANT SWITCH.

APPLICATION FILED APR. 28. 1921.

1,42 1 ,085 Patented June 27, 1922.

' INVENTOR. D avid Him rtf BY J ATTO' RNEYS.

UNITED stares smear OFFICE.

av n rrJenTrI, or vnw YORK,}1\TQ 31., essie'ivon 'ro THE .eE iERAL lyreonfmn'se MANUFACTURING 00;, or snrnenron'r, CONNECTICUT, A CORPORATION OF CONNECTICUT.

T0 aZZ whom it may concern; r o

Be it known that DAVID HJORTH, a citizen of the United States, and resident of New York, in the county ofNewYork and State of New York, has inivented, certain new and usefulImprovements in Pendant Switches, of which the followingis a specification. Y

My invention relates to an electric switch mechanism of the push button type andv briefly refers to what is commercially known as a, pendant switch.

The object of the present inventionis to I provide an improved and simple form of.

switch mechanism which can be mounted in a porcelain, enclosed, in a metal socket, andadapted to be suspended from a wire, and operated byone handonly manipulating the. push button to turn the circuit on and ofi. Further to design the switch so that the same may be made up inexpensively from Further objects and advantages of the in ventionwill appearj in thejtollowing specificationfsand novel features of this device willjbe further and particularly pointed out in' the appendingjclaimgand upon theac-- companying drawingsjforminga part of this spec fication Wlll be notedsimilar reference characters to ind cate the correspond ing-parts throughout'the several figures and ofwhich, V r Fig, l ,shows ,a side jelevation of my improved formof pendant switch as it would appear when enclosed within a sheet metal socket,

Fig.2 shows a plan view of the switch mechanism including a porcelain block for supporting the, same the sheet metal socket for jenclosing the same being omitted. I

Fig; 3 is a central verticalsectiontaken on,

line 33 ofFigQ illustrating theparts in their normal positions and the armature in position forengagement withthe terminals ,Fig 4 shows a. similar side view of the p'switch mechanism shown in Fig. 3, the

operating slide being omitted.

Fig. 5 is a detached'side vlew ofthe slide and pawl removed from the housing shown inFi QePand as seen from the oppositeside of Fig. 3. I p I i PENDANT swnrorr. v

s e ifieafibnor teammate retested J uiie 1922.

Application filed April 28, 1921. Serial No, 465,124.

Figl' 6Hsliows a side view somewhat like F1g,3.but with thepush button, slide and connected parts inan operatedposition.

Fig. 7 shows a central vertical section Referring in detail tothe characters of reference marked upon the drawings, 10 represents the shell, 11 the cap, 12 the wires switch is suspended.- 18 indicates the push button and let a guide in which the push button is slidably mounted, said guide beingv provided with, fingers 15 having holes whereby the same may be attached with screwspto the porcelain block 16 and the housing 19'. i a

17 and 18 represent binding posts and 20 ,and 21 the terminals in which the posts are. mounted and between which thebrushes 22 by-means of which the complete pendant I of the armature are positioned to form the circuit through the, switch.

The housing is formed of sheet metal and includes a straight back having two opposite side walls 23 and vvertical guide flanges 2 h jTheslideQ-S is mounted on the guidesto reciprocate between the, sides and the flanges.

The push butt-on is secured to a depending 1 shank 25 ofthe slide and thus serves as a means to operate the same against the action of the spring 27 mounted upon the pin 28,

plate 31; i I

i with stops 34 against which the short end of the armature strikes to limit themovement of the armature The contact or-brush members 22 are insulatively secured to the outer,

end of the armature and are carried therewith to make andbreak connections between the two terminals 20 and 21. The armature is actuated by means of a spring 35 mounted upon a stem36, one end of which is slidably mounted in the outer end of the armature and the other end pivotally connected asat 37 to the rocker member'38. V v

This rocker member is pivoted to the central portion of theinside of the housing at 33 and. is adapted to be thrown forward- :and backward by the operation of the push button and connected parts. Pins 39 and 40 are positioned on the near side of this rocker member and adjacent to the outer edge portion and in alignment with the sockets 4:1 in the forward end of the pawl 42. The pawl is pivoted at 43 to the plate 31 having opposite parallel flanges &4 which engage the inner side of the housing to guide the plate backward and forward when the slide is operated.

A link 45, one end of which is pivoted to the forward end of the slide and the other to the forward end of the pawl serves to operatively connect the two so that when the push button and slide are shoved forward the link, pawl and plate will likewise be carried forward in a direct line so that the pocket in the forward face of the pawl will engage the nearest of the pins 39 or 4:0 to throw the rocker member, and further so that when the push button is released, the spring 27 which is in engagement with the pin 30 on the plate 31 will force the latter,

- together with the slide, back to their lower or normal position. This causes the pawl and link to swing, asindicated in dotted lines in Fig. 5, so as to pass the pin on the rocker member which has been positioned for engagement by the next operation.

By reason of the use of the plate 31 which fits against the slide we are enabled to ob tain a flexible connection between the piv otal point 43 for the pawl and the pivotal connection of the link to the slide and whereby the said pawl is free to swing from one side to the other as is necessary to pass the pins 39 and 40 on its return movement. It will further be noted that by reason of the notch 46 formed in the upper portion of the plate ample room is provided in which to position the link and whereby the end thereof which is pivoted to the pawl is free to swing to the extent necessary to afford the pawl the required movement.

From the foregoing it will be seen that the normal positions of the parts are shown in Fig. 3 and that by simply pressing upon the push button 13, the slide 25, the link 45, pawl 42 and plate. 31 are all carried up against the resistance of the spring 27. This movement causes one of the sockets ll in the pawl to engage the nearest pin 40 on the rocker member, see Fig. 4, and serves to move the same forward and to rock the member until its pivotal pin 37 is carried over the center. This compresses the spring 35 and causes it to throw the armature back as shown in Fig. 6. IVhen the push button .is released the slide and connected parts return to their lower and normal position, when a further operation will obviously throw the armature in the reverse direction.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is I V ble connection between the rocker member and armature whereby the latter is thrown backward and forward by the rocker move ment of the latter, a double acting pawl for engaging and operating the rocker member, a link one end of which is connected to the slide and the other end to the pawl, and whereby the pawl is carried with the slide, and a spring for returning the pawl and slide to their normal position.

2. In a pendant switch of the class described, the combination of a porcelain block andmeans for enclosing and supporting the same, of a housing positioned therein, a slide mounted in the housing and having a depending shank and a push button attached thereto, a rocker member pivotedly attached to the housing, an armature also pivoted to the housing, a flexible connection between the rocker member and armature whereby the latter is thrown backward and forward by the rocker movement of the latter, a plate positioned against the slide and adapted t be carried thereby, a double action pawl pivotedly connected to the plate,

a link one end of which is connected to the slide and the other end to the pawl and whereby the pawl and plate are flexibly carried with the slide, and a spring for returning the plate and slide to their normal position.

3. In a pendant switch of the class described, the combination of a housing, a slide mounted in the housing and having means for actuating the slide, a rocker member pivotedly attached to the housing, an

armature also pivoted to the housing, a flexible connection between the rocker member and armature whereby the former is thrown backward and forward by the movement of the latter, a double acting pawl for engaging and operating the rocker member, a link one end of which is connected to the slide and the other end to the forward end of the pawl, means for guiding the lower end of the pawl, and a spring for returning the pawl and slide to their normal position.

4. In a pendant switch of the class described, the combination of a housing, a slide mounted in the housing and having a push button attached thereto, a rocker member pivotedly attached to the housing, an armature als pivoted to the housing, a flexible connection between the rocker memher and armature whereby the latter is thrown backward and forward by the rocker movement of the latter, a plate positioned against the slide, a pawl pivotedly connected to the plate and adapted to engage and operate the rocker member, a pivotal York and State of New York this 9th day connection between the slide, pawl and plate of April, A. D., 1921. and whereby the pawl is carried forward to throw the rocker member, and a spring for DAVID HJORTH' 5 returning the plate and slide to their normal Witnesses:

position. JOSEPH N. J ORTH,

Signed at New York in the county of New DoRoTHEA A. JORTH. 

